According to the new structure of IERS implemented in 2001 three ITRS Combination Centres are responsible for the computation of ITRS realizations. After a validation procedure, one realization is defined to be the official ITRF solution.

For the ITRF2008, IGN and DGFI-TUM contributed by computing ITRS realizations. The realization computed by IGN was selected as the official ITRF2008.

For the ITRF2014, IGN, DGFI-TUM, and JPL contributed with their respective ITRS realizations. The realization computed by IGN was selected as the official ITRF2014.

For the ITRF2020, IGN, DGFI-TUM, and JPL contributed ITRS realizations. The realization computed by IGN was selected as the official ITRF2020.

For the ITRF2020, updates were provided by IGN, DGFI-TUM, and JPL: IGN released ITRF2020-u2023 and ITRF2020-u2024, DGFI-TUM released DTRF2020-u2023, and JPL released JTRF2020-u2022.

ITRS Combination Centre at Deutsches Geodätisches Forschungsinstitut (DGFI-TUM)

DTRF2008

Description

Web page

DTRF2014

Description

Web page

See also IERS Message No. 311

DTRF2020

Description

Web page

See also IERS Message No. 484

DTRF2020-u2023

Description

Web page

See also IERS Message No. 541

ITRS Combination Centre at Jet Propulsion Laboratory (JPL)

JTRF2014

Web page

JTRF2020

Web page

JTRF2020-u2022

See IERS Message No. 520